Select the object on the canvas that you want to modify.
Last updated on
Sep 11, 2025
Learn how to make precise adjustments in Adobe Illustrator by entering numeric values directly, in specific increments, and as basic math expressions in panels and dialog boxes.
When working in Illustrator, instead of relying only on on-canvas adjustments, you can enter numeric values for those properties to create and modify artwork with accuracy. In all the panels and dialog boxes that accept numeric property values, you can use the same methods to enter values.
Enter values directly in supported measurement units
In the value field of the panel or dialog box, type the value in the default measurement unit or another supported unit:
- Default unit: Delete any existing value and type the required value. Even if you delete the default unit, Illustrator automatically adds the default unit after you enter the value.
- Another unit: Delete any existing value and the default unit. Then, type the required value followed by the unit abbreviation without space. For example, type 5in for 5 inches, 10mm for 10 millimeters, or 25pt for 25 points. Illustrator converts the unit to the default unit and shows it.
Press Enter to apply the value.
Adjust values in specific increments
Select the object on the canvas that you want to modify.
Click in the value field of the panel or dialog box where you want to adjust the value.
Press the Up or Down arrow key to increase or decrease the current value by 1 unit.
Hold down Shift while pressing the arrow keys to adjust by larger increments, typically 10 units.
Hold down Cmd (macOS) or Ctrl (Windows) while pressing the arrow keys to adjust by fractional increments. This option may not work for some fields, especially those in percentage values.
Press Enter to apply the value.
Enter values as basic math expressions
Select the object on the canvas that you want to modify.
In the value field of the panel or dialog box, do one of the following:
- To replace the entire current value with a math expression, select the entire value.
- To use the current value as part of your math expression, click before or after it.
Type a simple math expression using +, -, *, / or %.
For example:
- Typing 50+10 gives 60
- Typing 100*0.5 gives 50
- Typing 3cm*50% gives 1.50 cm
- Typing 50pt+25% gives 62.5 pt
Press Enter to perform the calculation and apply the value.
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